I don't believe there is a specific app promotion creative for GSP campaigns. What happens with GSP creatives is that when you upload them to the interface and send them for approval, they are resized and adjusted for Mobile screens as default.You can see the resized version in a preview mode as well.

You can put in your messaging in the creative along with the link to download the app through the istore or any other App store and link it to your GSP campaign to track your conversions accurately.

I hope I have cleared your doubt here, in case there are any other issues or queries on this, please feel free to reach out to us here.

Cheers!

Shashank

Cheers,Shashank Singh, AdWords Rising Star | Did you find any helpful responses or answers to your query? If yes, please hit "Like" or "Accept as Solution"